Author: Aaron Mullally

This lesson will explain the structure of lipids as well as discuss their function in our bodies.

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Video Images: Myristic acid image, Public Domain: http://bit.ly/TBfROt; Arachidonic acid, Public Domain: http://bit.ly/QBj5qM; Triglyceride image, Public Domain: http://bit.ly/VX7TG8; Phospholipid image, Public Domain: http://bit.ly/W3srZ7; Cholesterol image, Public Domain: http://bit.ly/TBfJyG

  • Lipid

    An organic molecule made up of glycerol and fatty acids, which is non-polar and does not dissolve easily in water

  • Nonpolar

    Does not dissolve easily in water

  • Fat

    A lipid made of a glycerol molecule and a fatty acid side chain

  • ​Saturated Fat

    A type of fat which does not have double bonds in its side chain

  • ​Unsaturated Fat

    ​A type of fat which has double bonds in its side chain

  • Trans Fat

    ​A type of unsaturated fat which is unhealthy and may lead to health problems

  • Triglyceride

    ​A type of lipid which is made up of a glycerol molecule and three fatty acid side chains

  • Phospholipid

    A type of lipid made up of a hydrophilic head and hydrophobic tail, and is found in cell membranes

  • ​Sterol

    ​A type of lipid containing only a glycerol molecule